DTIC ADA216008: The Gamma-Ray Laser Project

	DTIC ADA216008: The Gamma-Ray Laser Project
	by Defense Technical Information Center
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	Recent approaches to the problem of the gamma-ray laser
	have focused upon upconversion techniques in which
	metastable nuclei are pumped with long wavelength
	radiation. At the nuclear level the storage of energy can
	approach tera-Joules per liter for thousands of years.
	However, any plan to use such a resource for a gamma-ray
	laser poses problems of a broad interdisciplinary nature
	requiring the fusion of concepts taken from relatively
	unrelated field of physics. Our research group has
	described several means through which this energy might
	be coupled to the radiation fields with cross sections
	for stimulated emission that could reach 10 to the minus
	17th power sq. cm. Such a stimulated release could lead
	to output powers as great as 3 X 10 to the 21st power
	Watts/liter. Since 1978 we have pursued an approach for
	the upconversion of longer wavelength radiation incident
	upon isomeric nuclear populations that can avoid many of
	the difficulties encountered with traditional concepts of
	single photon pumping. Recent experiments have confirmed
	the general theory and have indicated that a gamma-ray
	laser is feasible if the right combination of energy
	levels and branching ratios exists in some real material.
	Of the 1,886 distinguishable nuclear materials, the
	present state-of-the-art has been adequate to identify 29
	first-class candidates, but further evaluation cannot
	proceed without remeasurements of nuclear properties with
	higher precision.

	Date Published: 2018-02-24 00:33:42
	Identifier: DTIC_ADA216008
	Item Size: 33178289
	Language: english
	Media Type: texts

	# Topics
	DTIC Archive; Collins, Carl B ; TEXAS...

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